The University of Tehran Journal of Foreign Language Research 2588-4123 12 3 2022 09 23 An acoustic Survey of russian fricative consonants in the expression of iranian persian students and its comparison with the standard language An acoustic Survey of russian fricative consonants in the expression of iranian persian students and its comparison with the standard language 238 256 88747 10.22059/jflr.2020.307078.740 FA Alireza Valipour Candidate of Philological Sciences, Professor, the Member of Academic Council of University of Tehran, Department of Russian Language, Faculty of Foreign Languages & Literatures ,Teaching Russian language, Tehran, Iran. 0000-0002-1533-1529 Mohammad Jamalzad PhD student, Teaching assistant, Department of Russian language, University of Tehran, Faculty of Foreign Languages & Literatures, Teaching Russian language, Tehran, Iran. Journal Article 2020 08 03 The purpose of foreign language teaching is the ability to communicate as closely as possible with the target language (Azimov, 2009, 98). The first step in understanding and transmitting meaning is in the foundations of phonology. Regardless of the learner's mastery of grammar and lexical knowledge, the incomprehensibility of pronunciation can actually impair communication. The purpose of this study is to compare the pronunciation of Persian language students in the pronunciation of some Russian phonemes with standard pronunciation. A comparative study in this area provides the possibility of minimizing the negative impact of the phonetic system of the mother language (here Persian language) on learning a second language (here Russian language). The results clearly show that Russian phonemes, which are similar to those in Persian (Including fricative consonants examined in this article), have practically no correspondence with each other in terms of physical characteristics, intensity, phonology, strength, articulation, first formant, second formant active and inactive speech organs. Students also pronounce Russian words, replace the original sample with Persian phonemes. This creates an accent that takes education away from its original purpose. Investigate how this deviation in producing these sounds is formed, it can greatly help the students to eliminate it. The purpose of foreign language teaching is the ability to communicate as closely as possible with the target language (Azimov, 2009, 98). The first step in understanding and transmitting meaning is in the foundations of phonology. Regardless of the learner's mastery of grammar and lexical knowledge, the incomprehensibility of pronunciation can actually impair communication. The purpose of this study is to compare the pronunciation of Persian language students in the pronunciation of some Russian phonemes with standard pronunciation. A comparative study in this area provides the possibility of minimizing the negative impact of the phonetic system of the mother language (here Persian language) on learning a second language (here Russian language). The results clearly show that Russian phonemes, which are similar to those in Persian (Including fricative consonants examined in this article), have practically no correspondence with each other in terms of physical characteristics, intensity, phonology, strength, articulation, first formant, second formant active and inactive speech organs. Students also pronounce Russian words, replace the original sample with Persian phonemes. This creates an accent that takes education away from its original purpose. Investigate how this deviation in producing these sounds is formed, it can greatly help the students to eliminate it. https://jflr.ut.ac.ir/article_88747_5cf1a7d89988952211e26ee6ff878f35.pdf